/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author shernandez
 */
@WebServlet(name = "Multiplica1", urlPatterns = {"/Multiplica1"})
public class Multiplica1 extends HttpServlet {

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            
            if(request.getSession(false) != null){ //Verifica se se ha creado la session, mas no lo crea si no existe
            
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet Multiplica1</title>");  
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Tablas de Multiplicar</h1>");
             out.println("<h1>Hola " + request.getSession().getAttribute("nombre") +"! </h1>"); //obtengo un atributo de la sesion
            out.println("<a href='logout'>Desconectar</a>");
            out.println("<FORM method=post action=\"Multiplica2\">");
            out.println("<br>");
            out.println("Introduce la tabla de multiplicar a calcular:<br>");
            out.println("<INPUT type=text name=\"tabla\">");

            out.println("<INPUT type=submit value=\"Enviar\">");

            out.println("</FORM>");

            out.println("</body>");
            out.println("</html>");
            
            }else
                response.sendRedirect("MultiplicaInicio");
            
            
        } finally {            
            out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
